mcrdougall



S. T.' Mc'DOUGALL, OF BRIOOKLYN7 NEW YORK.

Letters .Patent No. 74,563, dated February 18, 1868.

IMPROVEMENT 1N LAMPS.

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Be it known that I, S. T.. McDoUGLmof Brooklyn, in A'theceunty of Kings, and State ofNew York, have invented, made, and applied to' use 'certain-new and usei'ul Improvements in the'Construction and Operation of Lamps for burning hydrocarbon oils; and I do declare the following to be a full, clear, and' correct description of the same, reference being had to the accompanying drawings, making part of this specification, and to the` letters of reference marked thereon, inwhichg Y 4Figure 1 is u. sectional view of my improved lamp forburning hydrocarbon' oils.

Figure 2 is a. view of the wick-tube detached from the lamp.

Figure 3 is a top view of .the wick-tube,- when arranged to burn flat wick.

Figures 4 and 5 are views of the pieces W, X, and Z, referred to in specification. 1

Figure 6 is a front view of my improved lamp. V

In thetdraw'ings, llike parts of the inventionare designated ,by the samemletters of reference.

The nature` of my invention consists (a) in thepconstruction ofa wick-tube, sc that either fiat or round wicks may he used; (b) in the construction and operation of what I term a telescopic chimney, as more fully hereinafter described; (c) in suspending the button employed to deilect the ila-me within the chimney, as more fully hereinafter set forth. i

' To enable those skilled inthe arts to vmake and use my improvemental will proceed to describe the con-fstruction and operation of the same.A

A shows a stand for supporting my improved lamp; and B is the oil-fount, into which oil is supplied through the opening b,K and from which it is supplied to the wick through the armsc.

C is al central chamber, in which the wick-tube isinserted, whichl chamber communicates with the oilfount surrounding it, through the arms c. Within this central chamber C is placed a tubular support, D, for

- supporting the wick-tube. Through the centre of this tubular support passes the rod E, having a screw-thread cut upon its lower end, to which is attached a wheel, by which the rod may be operated. Y-

.liisv the wick-tube, formed of any suitable metal, and being simply a tube suiiiciently large to readily he passed over the support D. This tube is so constructed as'to allow the use of either round or iiat wicks.

' When Hat wicks are to`4 be used,` the/secondaryr plates of metal G G, having theiredges bent down a short distance', to form sides, as itwere, are placed over the wick-tnbe,' and held in position thereon byan encompassing spring, orin any convenient way, the wicks used being inserted between the tube F and the plates G Git When round wicks are to be'employed, .these plates G Gr2 are not necessary. The wick-tube is placed loverthe tubular support, and a cross-piece, d, is placed upon the vend of the ,rod E,zand secured thereon by means of a screw, e, thus holding the wick-tube securely in position. v V

Il he object of thus constructing and securing the wick-tube is, that the wick may be adjusted by, raisingor lowering .the wicktube, instead of raising or lowering the wick, and this is done uy turning the wheel upon the bottom of the rod E. i

` The peculiar advantage arising from thus adjusting the wick is that, in trimming the same, the wick can be raised sutiiciently high above the end of the wickstube, so that the wick will -not require to b e moved upon the tube for several days. Y 'i v W and'Z are parts placed over the wick-tube to protect the wick, preventing, as they do, the heat froth passing. from thc ilameto the wick. The piece W is cap-shaped on one end, its upperiedge being turned out; ward, and it is placed upon the cross-pieced, so that the projecting topshall project above the wick-tube.

The part Z consists simplyof Va hand, placed over the top of the central chamber, its upper edge being parallel with the upper edge o f the part W. t X'shows an inverted cone, placed outside the wick-tube, and resting uponthe collar. H. This is employed, as in many other lamps, to throw the air down to the base f the dame."

The chimney, J, of my improved lamp is made in sections, connected together by a rod provided with a screw-thread, and passed between cross-pieces upon the inside of the ysections of. which'the chimney is formed. The object in thus constructing the chimney is that itmay be made longer or shorter-,ns occasion requires,

and this is done by turning eitherr the upper or lower section, so.- that the two sections may be extended or brought together. n

Thus I formwhat I term a telescopic chimney, the. employment of which enables me to use hydrocarbon oils of various grades. Within this telescopic chimney, attached to the lower end of the rod which' connects i the sections ofthev same, is the deiiecting button ordisk K, placed abovethe'iiame, and attached as shown, that -tsposition relatively tothe iame may be adjusted with the lengthening orI shortening of the chimney.. v

Such being the-construction, the operation of my improvedl lamp is the same as the ordinary lamps for` burning hydrocarbon oils. l

It will be observed that, by constructing the wick-tube as I do, either round or dat wicks may be usedanadvantage not heretofore presented; that, by adjusting the chimney and deector, I can use all the various grades of hydrocarbon oils, and greatly. increase the flame in brilliancy and heat; that the parts W and Z fully protect the heat from passing from theliiame to the wick, While my means of regulating the position ofthe wick,

as already stated, enables the wick to be used several days without the necessity of frequent trimmings.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is- `1. So constructing a wick-tube that either round or dat wick can be employed, snbstantialiy in the manner as described. i

2. The construction and operation of la. telescopic chimney, substantially as and for the purposes specified. 3. Suspending the button to deeet the flame within the `chimney, for the purposes fully described. Y

' f i s. fr. MQDOUGALL. Witnesses: l

A. SIDNEY DoANE, JAMES PoUGE. 

